IMAT (International Medical Admissions Test, Italy) Practice Quiz

Question 1

In a eukaryotic cell, the enzyme complexes of the electron transport chain that generate the proton-motive force for oxidative phosphorylation are embedded in which structure?

Accepted Answer

The inner mitochondrial membrane

Question 2

An animal cell is placed in a solution and subsequently shrinks. The solution must be:

Accepted Answer

hypertonic to the cell’s cytoplasm

Question 3

Which sequence correctly describes the route of a secreted glycoprotein through the endomembrane system?

Accepted Answer

Rough ER → cis-Golgi → trans-Golgi → secretory vesicle → plasma membrane

Question 4

The Na⁺/K⁺-ATPase of the neuronal plasma membrane:

Accepted Answer

exports 3 Na⁺ and imports 2 K⁺ per ATP hydrolysed, making it electrogenic

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